So, actually my keyboard doesnt work and i am stuck "most " of the times on the login screen. In fact, only few times i manage to open the on-screen keyboard and log into the computer. When i manage to do that , I see that when i type letters/numbers, example 1, i get 1qa and 2ws etc. They only keys i can use properly are 5-6 , t,y ,z-? on the bottom line.pretty much that. instead of when i can type the 1qa etc. Ofcourse no backspace and delete. By the way it happened all of a sudden when i was using my computer the day before then suddenly in the morning the problem occured. Excuse my English 
( I would like to add that even with on screen keyboard the issue of 1qa, 2ws etc persists)

( I would like to add that even with on screen keyboard the issue of 1qa, 2ws etc persists)